1 Department of Medical Oncology, the Netherlands Cancer Institute, Amsterdam, the Netherlands.
2 Department of Psychosocial Research and Epidemiology, the Netherlands Cancer Institute, Amsterdam, the Netherlands; Department of Health Technology and Services Research (HTSR), University of Twente, Enschede, the Netherlands.
3 Department of Respiratory Diseases, Radboud University Medical Centre, Nijmegen, the Netherlands.
4 Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, the Netherlands.
5 Department of Psychosocial Research and Epidemiology, the Netherlands Cancer Institute, Amsterdam, the Netherlands; Board of Directors, Rijnstate Hospital, Arnhem, the Netherlands.
6 Department of Medical Oncology, the Netherlands Cancer Institute, Amsterdam, the Netherlands; Department of Medical Oncology, University of Amsterdam, Amsterdam, the Netherlands. Electronic address: g.sonke@nki.nl.